The aim of this topic is to solve the problem of the present seeder to exist sparse breaks up the phenomenon to be serious, the existence lump seeding, we had designed and made one kind of assembling the falling plant evening wheat seeder—2BXJF-12 wheat seeder, this wheat seeder can remarkably enhance the uniformity of wheat sowing seeds; has achieved the goal of festival seed, increase production.

Because majority of our country areas the wheat seeder all uses the V-belt pulley seeder-metering device, this article has analyzed the existence question of the outside V-belt pulley wheat seeder and proposed the corresponding improvement design proposal.

According to the natural conditions, farming systems and requirements for agricultural techniques, and based on the features and economic considerations of the popular seeding machines in Shaanxi,thispapersuggeststhat wheat seeder of 2BBF 3/6, corn seeder of 2BJ 3 for stub land in Guanzhong irrigation area, wheat furrow seeder of 2BFG 6(S) on Weibei Highland be used, though they need to be improved.

We adopted new construction--solid cone face seed plate, quantity limiting cut-off and plunger type knocker in the design of metering device which seeding three rows by one feeder. The rate of wheat seeding is varied from 45 kg to 135 kg per hectare. It is precision in seed spacing or uniform distribution in the row. The rate of seed damage caused by the feeder is less than 1%. The application of the precision wheat seeder assuredly saves 45-75 kg of seeds and increases wheat output 750 kg per hectare....

We adopted new construction--solid cone face seed plate, quantity limiting cut-off and plunger type knocker in the design of metering device which seeding three rows by one feeder. The rate of wheat seeding is varied from 45 kg to 135 kg per hectare. It is precision in seed spacing or uniform distribution in the row. The rate of seed damage caused by the feeder is less than 1%. The application of the precision wheat seeder assuredly saves 45-75 kg of seeds and increases wheat output 750 kg per hectare.

According to the natural conditions, farming systems and requirements for agricultural techniques, and based on the features and economic considerations of the popular seeding machines in Shaanxi,thispapersuggeststhat wheat seeder of 2BBF 3/6, corn seeder of 2BJ 3 for stub land in Guanzhong irrigation area, wheat furrow seeder of 2BFG 6(S) on Weibei Highland be used, though they need to be improved.

Having recommended the avoid ploughing wheat seeder's ensemble architecture and operation principleof, the choice , design and parameter of the groundwork part are fixed . Studying and designing indicates: This machines are of simple structure , light, adjust user-friendliness, can meet the agricultural demand of the wheat seeding and avoid ploughing .